A new corydoras lacépède, 1803 (Siluriformes: Callichthyidae) from the rio araguaia basin, Brazil, with comments about Corydoras Araguaiaensis Sands, 1990

Abstract

A new species of Corydoras is described from the rio Araguaia basin, Goiás, Brazil. The new species can be distinguished from its congeners by presenting the following features: infraorbital 1 with very large ventral laminar expansion; infraorbital 2 contacting compound pterotic; flanks densely covered by irregular black spots; and ventral surface of trunk densely covered by coalescent relatively well-developed platelets. It is also discussed the possibility that C. araguaiaensis comprehends a complex of species.